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CVE-2008-1923

Published: Apr 23, 2008Updated: Apr 23, 2026 Sources: CVE List NVDCWE-16
NVD MITRE
7.1CVSSHIGH
EPSS Score
1.4%
Top 31.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

The IAX2 channel driver (chan_iax2) in Asterisk 1.2 before revision 72630 and 1.4 before revision 65679, when configured to allow unauthenticated calls, sends "early audio" to an unverified source IP address of a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed NEW message.

CVSS Vector Breakdown

AV:NAC:MAu:NC:NI:NA:C
Exploitability
AV:NAccess Vector
Network
AC:MAccess Complexity
Medium
Au:NAuthentication
None
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:CAvailability
Complete
Open in CVSS calculator →

Weaknesses

CWE-16

Affected Products

n/an/a
asterisk appliance developer kitasterisk
On-prem
Communications / voip-telephony
asterisk business editionasterisk
On-prem
Communications / voip-telephony
asterisknowasterisk
On-prem
Communications / voip-telephony
open sourceasterisk
On-premWeb App
Communications / voip-telephony
asteriskoss-projectCommunicationsaka open source, asterisk appliance developer kit
and 1 more affected products View all →

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/42049
exchange.xforce.ibmcloud.com
http://downloads.digium.com/pub/security/AST-2008-006.html
downloads.digium.com
http://bugs.digium.com/view.php?id=10078
bugs.digium.com
and 1 more references View all →

Timeline

Published
Apr 23, 2008
Last Updated
Apr 23, 2026

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